Coding Byte-Level BPE from Scratch (Python NLP Tutorial)
Ever wondered how Large Language Models like GPT-2 handle text, code, and even emojis? It’s not magic—it’s Byte Pair Encoding (BPE).
Content Summary: In this video, we are ditching the pre-built libraries (like HuggingFace) to build a Byte-Level BPE tokenizer completely from scratch in Python. You will learn how to convert raw text into bytes, implement the merge algorithm to compress data, and handle complex inputs like emojis exactly how modern LLMs do it.
What we cover:
Difference between Character-level vs. Byte-level processing.
Encoding text to UTF-8 bytes.
The math behind the "Merge" algorithm.
Writing the encode and decode functions in pure Python.
#NLP #Python #MachineLearning #DeepLearning #LLM #Tokenizer #CodingFromScratch #DataScience
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